mirror of https://github.com/ppy/osu
78 lines
2.8 KiB
C#
78 lines
2.8 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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#nullable disable
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using osu.Framework.Graphics;
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using osu.Framework.Graphics.Containers;
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using osu.Game.Rulesets.UI;
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using osuTK;
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namespace osu.Game.Rulesets.Osu.UI
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{
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public class OsuPlayfieldAdjustmentContainer : PlayfieldAdjustmentContainer
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{
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protected override Container<Drawable> Content => content;
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private readonly ScalingContainer content;
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private const float playfield_size_adjust = 0.8f;
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/// <summary>
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/// When true, an offset is applied to allow alignment with historical storyboards displayed in the same parent space.
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/// This will shift the playfield downwards slightly.
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/// </summary>
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public bool AlignWithStoryboard
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{
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set => content.PlayfieldShift = value;
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}
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public OsuPlayfieldAdjustmentContainer()
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{
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Anchor = Anchor.Centre;
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Origin = Anchor.Centre;
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// Calculated from osu!stable as 512 (default gamefield size) / 640 (default window size)
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Size = new Vector2(playfield_size_adjust);
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InternalChild = new Container
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{
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Anchor = Anchor.Centre,
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Origin = Anchor.Centre,
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RelativeSizeAxes = Axes.Both,
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FillMode = FillMode.Fit,
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FillAspectRatio = 4f / 3,
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Child = content = new ScalingContainer { RelativeSizeAxes = Axes.Both }
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};
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}
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/// <summary>
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/// A <see cref="Container"/> which scales its content relative to a target width.
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/// </summary>
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private class ScalingContainer : Container
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{
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internal bool PlayfieldShift { get; set; }
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protected override void Update()
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{
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base.Update();
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// The following calculation results in a constant of 1.6 when OsuPlayfieldAdjustmentContainer
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// is consuming the full game_size. This matches the osu-stable "magic ratio".
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//
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// game_size = DrawSizePreservingFillContainer.TargetSize = new Vector2(1024, 768)
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//
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// Parent is a 4:3 aspect enforced, using height as the constricting dimension
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// Parent.ChildSize.X = min(game_size.X, game_size.Y * (4 / 3)) * playfield_size_adjust
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// Parent.ChildSize.X = 819.2
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//
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// Scale = 819.2 / 512
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// Scale = 1.6
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Scale = new Vector2(Parent.ChildSize.X / OsuPlayfield.BASE_SIZE.X);
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Position = new Vector2(0, (PlayfieldShift ? 8f : 0f) * Scale.X);
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// Size = 0.625
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Size = Vector2.Divide(Vector2.One, Scale);
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}
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}
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}
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}
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